[SI-LIST] Re: f-domain to t-domain simulation

Hi Michael

Yes and No.

The phenomonon is real.  If you expect what you see to be real impedance the
answer is no.   On a real differential TDR this effect is seen, so 
transforming frequency
domain data to TDR response requires this same voltage rise.

I skirt the whole issue by adjusting assumed models in ADS to measured TDR
data and when they match each element can be seperately examined.

Ron Miller



Michael Rose wrote:

>When I convert a f-domain channel to differential t-params (TDD11), I
>notice the impedance rising along a transmission line segment as if the
>tline is predominantly inductive. This tends to bias the impedance
>higher for features towards the far end. The single-ended f-domain
>channel includes the normal 50 ohm terminations. Is this a real
>phenomena? How is it explained?
>
>Thanks. Mike  
>------------------------------------------------------------------
>To unsubscribe from si-list:
>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
>or to administer your membership from a web page, go to:
>http://www.freelists.org/webpage/si-list
>
>For help:
>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
>List technical documents are available at:
>                http://www.si-list.net
>
>List archives are viewable at:     
>               http://www.freelists.org/archives/si-list
>or at our remote archives:
>               http://groups.yahoo.com/group/si-list/messages
>Old (prior to June 6, 2001) list archives are viewable at:
>               http://www.qsl.net/wb6tpu
>  
>
>
>  
>


-- 
Ronald B. Miller, Microwave/SI Engineer  RAIL = NOISE + REFLECTIONS
Gigahertz Data Div of MI Corp.              \\  //         \\  // 
7721 Sunset Avenue                           \\//           \\//
Newark,  CA  94560                      ->JITTER<-   EYE   ->JITTER<-
tel 510-793-4744,                            //\\           //\\
fax 510-742-6686                            //  \\         //  \\
www.ghzdata.com                          RAIL = NOISE + REFLECTIONS 
                                                
                                                                                
                                                        

------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field


List technical documents are available at:
                http://www.si-list.net

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu
  

Other related posts: